Collar



FIG. 1 is a front, top perspective view of a collar showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a front perspective view thereof, the broken lines showing a dog are for illustrative purposes only, forming no part of the claimed design; and,

FIG. 9 is a front perspective view thereof, the broken lines showing a women are for illustrative purposes only, forming no part of the claimed design. 

The ornamental design for a collar, as shown and described. 